Jack Dorsey CEO, Block; co-founder, Twitter headshot

Jack Dorsey 

CEO at Block; co-founder, Twitter

Jack Dorsey is an American Internet entrepreneur and programmer, co-founder and former CEO of Twitter, and current head of payments company Block, Inc. He is an investor and supporter of open-source communications and financial software, and has backed numerous initiatives to help grow Bitcoin, Nostr, and open AI systems worldwide.

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